Hair iron



FIG. 1 is a perspective view of a hair iron showing my new design;

FIG. 2 is a front elevation view, the real elevation view being a mirror image thereof;

FIG. 3 is a side view thereof;

FIG. 4 is another side view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines shown in FIG. 1 and FIG. 2 of the drawings illustrate features of the article form no part of the claimed design. 

I claim the ornamental design for a hair iron, as shown and described. 